MemoryDependency

            const MemoryDependency = struct {
                ready: std.Io.Event,
                /// Null if the memory failed to be allocated
                memory: ?[]u8,

                const init: MemoryDependency = .{
                    .ready = .unset,
                    .memory = undefined,
                };

                fn get(dep: *MemoryDependency, io: std.Io) ?[]u8 {
                    dep.ready.waitUncancelable(io);
                    return dep.memory;
                }
            }